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An open textbook is a textbook licensed under an open license, and made available online to be freely used by students, teachers and members of the public.Many open textbooks are distributed in either print, e-book, or audio formats that may be downloaded or purchased at little or no cost.
Vornicu was a part of the Romanian team for the International Mathematics Olympiad (IMO) in 2001 and 2002. [2] In 2002 he earned a bronze medal at the IMO. He graduated at the University of Bucharest in 2006, and got his Master's Degree in Algebra and Number Theory at the same University in 2008. [3]
8 18 knot, "carrick mat" 10 161 /10 162, known as the Perko pair; this was a single knot listed twice in Dale Rolfsen's knot table; the duplication was discovered by Kenneth Perko; 12n242/(−2,3,7) pretzel knot (p, q)-torus knot - a special kind of knot that lies on the surface of an unknotted torus in R 3
Bedtime Math was founded in February 2012, initially as a website. In March 2014, Bedtime Math launched Crazy 8s, a free nationwide after-school recreational math club. [2] In 2019, Bedtime Math created Fun Factor, a K–5 curriculum developed in consultation with Teachers College, Columbia University. It features math activities. [3]
Colin Conrad Adams (born October 13, 1956) is an American mathematician primarily working in the areas of hyperbolic 3-manifolds and knot theory.His book, The Knot Book, has been praised for its accessible approach to advanced topics in knot theory.
7. In advising young students (in grade 10 or below) who desire to be selected for the USAMO whether to take the AMC 12 contest or the AMC 10 contest, please be aware of the following facts: a. In 2007, among 506 students invited to take the USAMO, 229 were in 10th grade and below. Those students had scored 6 or greater on the AIME. b.
This principle, foundational for all mathematics, was first elaborated for geometry, and was systematized by Euclid around 300 BC in his book Elements. [ 21 ] [ 22 ] The resulting Euclidean geometry is the study of shapes and their arrangements constructed from lines, planes and circles in the Euclidean plane ( plane geometry ) and the three ...
Access to information in the portal is generally free, except for the full-text sources of certain publications which have elected to make their content available on a fee basis. [3] The website can be read in either Russian or English. As a standard default, it renders on-screen mathematics using MathJax. [3]